Why don’t we turn uninhabited desert expanses, like the Sahara, into places to harvest solar power? Because the effects on our ocean, atmosphere and weather systems could be big and disastrous, say researchers Benjamin Smith and Zhengyao Lu.

From wind turbine technicians and forest fire inspectors to urban farmers and new plastics engineers, these positions represent just some of the employment opportunities available as we transition to a cleaner economy.

Next time you read an editorial proposing a climate fix or hear politicians touting plans to address the climate crisis, this basic framework will help you cut through the clutter and pick out the most viable ideas, says Bill Gates.

Here’s a riddle for you: A plane flew for five days and nights, staying airborne for 118 hours. But it didn’t use a single drop of fuel. How? Bertrand Piccard explains.